Geoff writes:

“Hello, I have OO9 (UK speak for HO narrow gauge). I’m planning to add a decoder to a Tomytec N gauge chassis for a narrow gauge railcar project. The connection from the wheels to the motor is by metal strips. As there aren’t any colored wires, I’m not sure which “side” of the motor and chassis to connect the red and black pickup wires and the orange/grey motor wires of the decoder. I’m not sure if it matters anyway, since the railcar doesn’t really have a front and back.”

If you are able to assist Geoff, please add your comments under his post.